CVE-2026-68385s390/checksum: Fix csum_partial() without vector facility
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: s390/checksum: Fix csum_partial() without vector facility Currently csum_partial() calls csum_copy() with copy=false and dst=NULL. On machines without the vector facility, csum_copy() falls back to cksm(dst, ...), causing the checksum to be calculated from address zero instead of the source buffer. The VX implementation already checksums data loaded from src. Make the fallback do the same by passing src to cksm().
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from dcd3e1de9d17dc43dfed87a9fc814b9dec508043 before 5fc0a2a6eeb99cac991242bb48796c7749ce3261; from dcd3e1de9d17dc43dfed87a9fc814b9dec508043 before 1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722; from dcd3e1de9d17dc43dfed87a9fc814b9dec508043 before 898bb2814f38399108bdd2113f38d97383a7036a; from dcd3e1de9d17dc43dfed87a9fc814b9dec508043 before 4bb06b60d982355e22647b3d12d6619419f8c1fa | CNA record |
References
- https://git.kernel.org/stable/c/5fc0a2a6eeb99cac991242bb48796c7749ce3261
- https://git.kernel.org/stable/c/1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722
- https://git.kernel.org/stable/c/898bb2814f38399108bdd2113f38d97383a7036a
- https://git.kernel.org/stable/c/4bb06b60d982355e22647b3d12d6619419f8c1fa
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.